Improvement in governors for steam-engines



j UNITED STATES l PATENT OFFICE,

' FRANK DOUGLAS, CF NORWICH, CONNECTICUT.

IMPROVEMENT` IVN GOVERNORS FOR STEAM-ENGINES.

Specification forming part of Letters Patent No. 39,799, dated September8, 1863.

To all whom it may concern,.-

Be it known that I, FRANK Donemus, of Norwich,in the county of NewLondon and State of Connecticut, have invented a new and ImprovedRegulator for Steam-Engines; and I do hereby declare that the followingis a full, clear, and exact description ofthe saine, reference being hadto the accompanying drawings, making a part ot' this specification, inwhich-.

Figure 1 is a perspective View of a horizontal engine with regulator andlilik attached. Fig. 2 is a vertical section of the regulator cutthrough the center.

Similar letters of reference indicate corresponding parts of bothfigures.

The object of my invention is to produce a regulator that will move alink, or any other arrangement that takes aconsiderable amount of powerup and down with ease, and maintain a steady motion of the engine; also,a link (that is moved by the regulator) that hangs on centers and slidesup and down through a box connected to valve-rod, and isl provided withset-screws and gib to take up lost motion.

A A A is the regulator frame and stand 5 B B, the regulator-balls; c c cc, regulatorarms; D, the block to which the upper ends of arms are hung.E, the (lri\'*ing-pulley,tur1is spindle F, which has a bearing at theupper end through frame A A, and on lower end by fitting into the socketf in upper end of screw arbor g, thus forming a guide 4for the upper Yend of arbor and lower end of spindle. Block D is attached to spindle Fby set-screw H. 'lhe clutch-block t', to which the lower ends of arms cc are attached, turns freely on arbor g. The centrifugal force ofregulator throws the block t' up and clutches into clutch-collar K, thatis firmly attached to screw-arbor g, .thus causing the arbor g to turnwith the block t' until it screws itself up out of clutch, when theblock t is allowed to play freely between the clutches. When thecentripetal force of the balls throws the block t down into the clutchesof collar M, which is iirmly attached to the stem of the upperbevel-gear, N, that plays freely through box o and on arbor g. Gear Nmeshes into the intermediate gear, l),

which'meshes into the lower gear, It, that is firmly attached to thearbor g, but plays freely through box o, thus turning the screw downthrough nut L until it runs itself out of clutch and leaves the block t'playing freely between the clutch-collars as before. .On the lower endof screw-arbor g is attached the spade handle joint S and connection T,jointing onto rod U, said rod having a strap, 8, around the main shaftof engine at one end, and connected by the pin b to the lower end oflink V, thus holding the link still at lower end, while the motion isgiven to the valves by the eccentric rod W, which is also hung centralon upper'end of link by pin b. The valve-rod .t plays through the squaresleeve y and connects on both sides of box 2f by pins 3A 3. Link Vslides freely up and down through the box 2. take up lost motion. Yoke 6on regulator is provided with spaces j j, through which arms c c passes,to prevent the blockt' from rurning up or down farther than the givenpoint indicated by spaces j j. Box 0, that contains bevel-gears, slidesup and down on guides 7 7.

The operation is as follows: When there is centrifugal force enough toraise clutchblock 'i and clutch into clutch-collar K, it turns thescrew-arbor g until it runs up out of clutch, taking connection U, andlink V as far as the balls B B indicate. When the balls drop andclutch-block t' clutches into collar M, the bevel-gear, in box oreverses the motion of screw g and runs the link down. When theregulator has heavy work to perform, the clutches are made on such anangle as to make the inclination as great to slide oft' as to cling ontothe clutches, thereby making the work of the balls B B but the liftingand lowering of the clutch-block z. When the link V is run up by theregulator-screw g, it makes the throw of the slidevalve less and cuts o'the steam at the point of stroke thus indicated, thereby precludin g thenecessity of any other regulator or cut-oft' valves and making theslide-valve a perfectly-workin g variable cut-0E.

What I claim, and desire to secure by Letters Patent, is-

1. The screw-arbor g, movable clutch-collars Gib 4 and set-screws 5 5yare to Kand M, and clutch-block fi, when used in combination with thebox o, and bevel-gears N,P,and R, thewhole combined to operate asdescribed, so that the clutch-collars K and M may be caused to run up ordown ont of clutch and allow clutch-block i to remain at any jointindicated by the regulator-balls.

2. The gude-socketf, when used to form a guide for spindle F andscrewarbor g, as described.

3. The manner of suspending the link V, as y herein specified.

FRANK DOUGLAS. Witnesses: v

GEO. PRATT, H. H. STARKWEATHER.

